#!/bin/sh

# Slackware build script for slatec

# Written by Pablo Santamaria (pablosantamaria@gmail.com)

PRGNAM=slatec
VERSION=${VERSION:-4.1}
BUILD=${BUILD:-1}
TAG=${TAG:-_SBo}

SRCVERSION=${VERSION}-4

# Automatically determine the architecture we're building on:
if [ -z "$ARCH" ]; then
  case "$( uname -m )" in
    i?86) ARCH=i486 ;;
    arm*) ARCH=arm ;;
    # Unless $ARCH is already set, use uname -m for all other archs:
       *) ARCH=$( uname -m ) ;;
  esac
fi

CWD=$(pwd)
TMP=${TMP:-/tmp/SBo}
PKG=$TMP/package-$PRGNAM
OUTPUT=${OUTPUT:-/tmp}

if [ "$ARCH" = "i486" ]; then
  SLKCFLAGS="-O2 -march=i486 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "i686" ]; then
  SLKCFLAGS="-O2 -march=i686 -mtune=i686"
  LIBDIRSUFFIX=""
elif [ "$ARCH" = "x86_64" ]; then
  SLKCFLAGS="-O2 -fPIC"
  LIBDIRSUFFIX="64"
else
  SLKCFLAGS="-O2"
  LIBDIRSUFFIX=""
fi

set -e 

rm -rf $PKG
mkdir -p $TMP $PKG $OUTPUT
cd $TMP
rm -rf ${PRGNAM}_$SRCVERSION
tar xvf $CWD/${PRGNAM}_${SRCVERSION}.tar.gz
cd $PRGNAM-$VERSION
chown -R root:root .
find . \
 \( -perm 777 -o -perm 775 -o -perm 711 -o -perm 555 -o -perm 511 \) \
 -exec chmod 755 {} \; -o \
 \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
 -exec chmod 644 {} \;

# Compile static and dynamic library.
v1=$(echo $VERSION | cut -d. -f1)
v2=$VERSION
make MA_N=${v1} MI_N=${v2} OPT="$SLKCFLAGS -std=legacy" F77="gfortran" CC="gcc"

mkdir -p $PKG/usr/lib${LIBDIRSUFFIX} 
cp -a libslatec.a $PKG/usr/lib${LIBDIRSUFFIX} 
cp -a libslatec.so.$v2 $PKG/usr/lib${LIBDIRSUFFIX}
( cd $PKG/usr/lib${LIBDIRSUFFIX} 
  ln -s libslatec.so.$v2 libslatec.so.$v1
  ln -s libslatec.so.$v2 libslatec.so
)

# Create manpages.
mkdir -p $PKG/usr/man/man3
for f in $(find -name "*.f") ; do
    sed -f $CWD/makedoc.sed $f > $PKG/usr/man/man3/$(basename $f .f).3
done

# Let's not overwrite manpages that are already on the system
for i in \
    acosh asinh atanh cacos cacosh carg casin casinh catan catanh cbrt ccosh \
    clog10 csinh ctan ctanh des erf erfc gamma rand ; do
  mv $PKG/usr/man/man3/$i.3 $PKG/usr/man/man3/$i-slatec.3 ;
done

find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
  | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true

( cd $PKG/usr/man
  find . -type f -exec gzip -9 {} \;
  for i in $( find . -type l ) ; do ln -s $( readlink $i ).gz $i.gz ; rm $i ; done
)

mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
cp -a readme  $PKG/usr/doc/$PRGNAM-$VERSION
cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild

mkdir -p $PKG/install
cat $CWD/slack-desc > $PKG/install/slack-desc

cd $PKG
/sbin/makepkg -l y -c n $OUTPUT/$PRGNAM-$VERSION-$ARCH-$BUILD$TAG.${PKGTYPE:-tgz}
